Explanation:
string roller is called an example of wheel and axel because The thin rod which needs to be turned is called the axle and the wider object fixed to the axle, on which we apply force is called the wheel.
hence the we apply force on the roller and the string gets tight.
The answer is C. Natural gas because both A and B are their own forms of energy.
Answer:
An Object is positively charged if it has more Positive Electrons in that object
